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231033148 = 22537115349
BaseRepresentation
bin11011100010101…
…00100100111100
3121002201200220021
431301110210330
5433121030043
634531501524
75503515013
oct1561244474
9532650807
10231033148
11109459695
12654578a4
1338b31608
142297da7a
15154393ed
hexdc5493c

231033148 has 24 divisors (see below), whose sum is σ = 417765600. Its totient is φ = 111733440.

The previous prime is 231033119. The next prime is 231033149. The reversal of 231033148 is 841330132.

231033148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231033149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7378 + ... + 22726.

It is an arithmetic number, because the mean of its divisors is an integer number (17406900).

Almost surely, 2231033148 is an apocalyptic number.

It is an amenable number.

231033148 is a deficient number, since it is larger than the sum of its proper divisors (186732452).

231033148 is a wasteful number, since it uses less digits than its factorization.

231033148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15477 (or 15475 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 231033148 is about 15199.7746035920. The cubic root of 231033148 is about 613.6085916603.

The spelling of 231033148 in words is "two hundred thirty-one million, thirty-three thousand, one hundred forty-eight".

Divisors: 1 2 4 53 71 106 142 212 284 3763 7526 15052 15349 30698 61396 813497 1089779 1626994 2179558 3253988 4359116 57758287 115516574 231033148